NATIONAL GEOGRAPHIC SOCIETY

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

NCGIA National Center for Geographic Information

Numerous efforts are underway by public and private groups to assess the status of biodiversity in the state. Most are being conducted at local to subregional scales, and many are focused on species or communities of special concern. Currently lacking is an overview of the protection status of species and communities both statewide and in the western U.S. as a whole. This report describes a geo...

متن کامل

The National Historical Geographic Information System (nhgis)

The National Historical Geographic Information System (NHGIS) is a five-year NSF-funded project designed to create a comprehensive U.S. census database—at the census tract and county level—for both the geographical and attribute data. Technological change presents an unprecedented opportunity to make these data readily available for social science research; thus bringing the complete census wit...

متن کامل

National Specialty Society for Community Medicine

National Specialty Society for Community Medicine Position Statement on Chrysotile Asbestos June 2010 Background The adverse health effects associated with exposure to asbestos exposure have been well established. Epidemiological, clinical, and laboratory studies have shown that asbestos is capable of causing lung cancer, mesothelioma, and a range of asbestos‐related diseases (International ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Science

سال: 1902

ISSN: 0036-8075,1095-9203

DOI: 10.1126/science.15.372.270